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單項(xiàng)選擇題

Aboard damage vessels, the most important consideration is preserving（）.

A.bilge pumping capacity
B.reserve buoyancy
C.level attitude
D.instability

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單項(xiàng)選擇題

Aboard ship, vertical flat plates running transverely and connecting the vertiacl keel to the margin plates are called（）.

A.floors
B.intercostals
C.girders
D.stringers

單項(xiàng)選擇題

Addition of weight above the center of gravity of a vessel will always（）.

A.reduce initial stability
B.increase righting moments
C.increase GM
D.All of the above

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